<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<input type="text"  >
<input type="button" value="帅哥" onclick="f(1)">
<input type="button" value="美女" onclick="f(2)">
<hr>
<script>
    let input = document.querySelector("input");
    function f(x){
        for(let i=0;i<input.value;i++) {
            let url = x == 1 ? "a.jpg" : "b.jpg";
            let img = document.createElement("img");
            img.src = url;
            document.body.append(img);
        }
    }

</script>
</body>
</html>